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rusfolder_downloader.exe

LLC Samson

The application rusfolder_downloader.exe by LLC Samson has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application. The file has been seen being downloaded from uvjibmosyi.landdes.ru.
Publisher:
LLC Samson  (signed and verified)

Version:
1.0.0.0

MD5:
d00162f0af12bdf34ce4cd9722cb04d9

SHA-1:
0ace13974f15da53791ce60a192d90cffbae5f68

SHA-256:
f42664b87e97ae016d50bad8dbb9ddd5627fa8ab0cf4e5b942f13daed42d73bd

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
11/30/2024 11:00:07 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallMonster (M)
16.7.19.6

File size:
3.5 MB (3,623,496 bytes)

Product version:
1.0.0.0

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\downloads\rusfolder_downloader.exe

Digital Signature
Signed by:
LLC Samson

Authority:
COMODO CA Limited

Valid from:
2/10/2015 4:00:00 AM

Valid to:
2/11/2016 3:59:59 AM

Subject:
CN=LLC Samson, O=LLC Samson, STREET="Shevchenkivsky Raion, Vulytsya Yakira, Budynok 13, Ofis 320", L=Kyyiv, S=Kyyivska, PostalCode=04119, C=UA

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
2F6D1501144924F4A5BD68CA50FEC560

File PE Metadata
Compilation timestamp:
6/20/1992 2:22:17 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
98304:VuSZLyldWK4X/rT1mzde5XkUCAswPWRykstD15sTcZM:VBZGlkKQWdWZCTwPUwtD1vZM

Entry address:
0x9ED680

Entry point:
60, BE, 00, C0, B6, 00, 8D, BE, 00, 50, 89, FF, 57, 83, CD, FF, EB, 10, 90, 90, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, 0B, 75, 28, 8B, 1E, 83, EE, FC, 11, DB, 72, 1F, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, EB, 52, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 75, D1, F8, 89...
 
[+]

Entropy:
7.9533

Packer / compiler:
UPX 2.90LZMA

Code size:
2.5 MB (2,629,632 bytes)

The file rusfolder_downloader.exe has been seen being distributed by the following URL.

http://uvjibmosyi.landdes.ru/cG1xRE91V3JPYmxLUkxDam57InNpZCI6IjY0MTYiLCJzdWJfaWQiOiI2ODc3MTciLCJybmQwIjoickJhbFBUK2JIV1JvdjZsRFNkMVlCQSIsInZlciI6IjEiLCJuYW1lIjoicnVzZm9sZGVyX2Rvd25sb2FkZXIiLCJ1cmwiOiJodHRwOi8vc3RnMjMucnVzZm9sZGVyLmNvbS9kb3dubG9hZC8_Mzc3MDcxNzEmQVhPakdjcWZDaHBWZlFRdlNBY0psdXd1Y2R6OTJDOFpIY1l3OU1PaE1EczRCNUZNZUNobDRnNzNIdEhLUWw1WjF6MGJBZFpUV2VNJTNEJmluc3RhbGxtb25zdGVyPTEiLCJ0eXBlIjoiaWZvbGRlciIsInNpemUiOiI5MDQ0OTM3In0,

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